Class: File

Inherits:
Object
  • Object
show all
Defined in:
lib/metamri/core_additions.rb

Overview

Method from ftools - requiring fileutils instead for Ruby 1.9 compatibility and explicitly adding this single method.

Constant Summary collapse

BUFSIZE = 
8 * 1024

Class Method Summary collapse

Class Method Details

.compare(from, to, verbose = false) ⇒ Object 



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# File 'lib/metamri/core_additions.rb', line 273

def self.compare(from, to, verbose = false)
  $stderr.print from, " <=> ", to, "\n" if verbose

  return false if stat(from).size != stat(to).size

  from = open(from, "rb")
  to = open(to, "rb")

  ret = false
  fr = tr = ''

  begin
    while fr == tr
      fr = from.read(BUFSIZE)
      if fr
        tr = to.read(fr.size)
      else
        ret = to.read(BUFSIZE)
        ret = !ret || ret.length == 0
        break
      end
    end
  rescue
    ret = false
  ensure
    to.close
    from.close
  end
  ret
end